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|Title:||Preparation and Thermoelectric Properties of Melt-Spun Fe 2Si5 Based Alloys|
|Authors:||Zhu, T.-J. |
|Source:||Zhu, T.-J.,Zhao, X.B.,Lu, L. (2003). Preparation and Thermoelectric Properties of Melt-Spun Fe 2Si5 Based Alloys. Materials Science Forum 437-438 : 471-474. ScholarBank@NUS Repository.|
|Abstract:||Mn and Co doped Fe2Si5 based thermoelectric alloys were prepared by melt-spinning technique. XRD analysis showed that only α phase existed in the as-solidified Fe2Si5 based alloys, and semiconducting β-FeSi2 thermoelectric phase and silicon were formed by the eutectoid decomposition of a phase during annealing other than the peritectoid reaction. Thermoelectric properties measurement suggested that a number of grain boundaries, which were created by rapid solidification process, enhanced carrier scattering and hence increased the Seebeck coefficient and electrical resistivity of Fe2Si5 alloys. Co doped samples had the higher power factors than those with the same amount of Mn dopants because the higher carrier concentrations could be obtained.|
|Source Title:||Materials Science Forum|
|Appears in Collections:||Staff Publications|
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